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DSL Availability and You

By: Jack Kennedy

When contemplating DSL availability, distance is the most important factor in determining if you can get DSL service and what level of quality you can expect. This distance means that, despite popular demand, DSL availability has yet to reach every corner of the country.

Copper Wires

Regular DSL is carried from the provider to your house by the same copper wires that are already carrying your phone service. As a digital signal travels farther from its source, it degrades, just like a radio signal dissolves into a bunch of unintelligible static when you drive out of state.

Generally, you must live within 18,000 feet of the service provider to qualify for DSL availability. There are several websites which allow you to input your address to determine whether or not you qualify.

Even if you’re within 18,000 feet and do qualify, the closer you are to the provider’s office, the faster your DSL will be.

Load Coils

Another factor affecting DSL availability is a tiny device called a ‘load coil’ installed by some phone companies.

The copper wires carrying your phone service have a broad bandwidth, meaning they can handle a wide range of frequencies. The human voice is clearest with a frequncy of 300 to 3,400 Hz. This is the portion of wire reserved for telephone calls.

DSL on those same copper wires uses frequencies in the 4,000 Hz and up range. This shouldn’t be a problem except that some companies had added load coils to the wire lines.

Load coils enhance the lower frequencies. This equals clearer voice transmission, but can interfere with DSL availability. If this is the case on your lines, you might want to consider going with a cable provider instead.

Don’t take it personally if you find out you don’t qualify for DSL availability.

Article Source: http://www.articlekingpro.com

Jack Kennedy monitors and reviews the Broadband DSL industry. To read more, please visit The DSL Center.

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